44905002091 has 4 divisors (see below), whose sum is σ = 45228059800. Its totient is φ = 44581944384.

The previous prime is 44905002061. The next prime is 44905002101. The reversal of 44905002091 is 19020050944.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 44905002091 - 2⁷ = 44905001963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (44905002041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 161528646 + ... + 161528923.

It is an arithmetic number, because the mean of its divisors is an integer number (11307014950).

Almost surely, 2^44905002091 is an apocalyptic number.

44905002091 is a deficient number, since it is larger than the sum of its proper divisors (323057709).

44905002091 is a wasteful number, since it uses less digits than its factorization.

44905002091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323057708.

The product of its (nonzero) digits is 12960, while the sum is 34.

The spelling of 44905002091 in words is "forty-four billion, nine hundred five million, two thousand, ninety-one".